Maybe pull a rocker cover and watch for reasonable valve movements while cranking? Maybe the driver's side, so you can double (triple?) check that both #1 valves are closed when distributor rotor points to #1? Good luck- I'm sure you'll find something soon!
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
... or has a Pontiac born the same year as Jim Wangers? (1926} 
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